Sökning: "Accelerator"

Visar resultat 1 - 5 av 173 avhandlingar innehållade ordet Accelerator.

  1. 1. Accelerator-driven systems safety and kinetics

    Detta är en avhandling från Stockholm : KTH

    Författare :Marcus Eriksson; KTH.; [2005]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Nuclear physics; Kärnfysik; NATURAL SCIENCES Physics Nuclear physics; NATURVETENSKAP Fysik Kärnfysik;

    Sammanfattning : The accelerator-driven system (ADS) is recognized as a promising system for the purpose of nuclear waste transmutation and minimization of spent fuel radiotoxicity. The primary cause for this derives from its accelerator-driven, sub-critical operating state, which introduces beneficial safety-related features allowing for application of cores employing fuel systems containing pure transuranics or minor actinides, thereby offering increased incineration rate of waste products and minimal deployment of advanced (and expensive) partitioning and transmutation technologies. LÄS MER

  2. 2. Accelerator-driven systems source efficiency and reacitvity determination

    Detta är en avhandling från Stockholm : KTH Royal Institute of Technology

    Författare :Andrei Fokau; KTH.; [2010]

    Sammanfattning : Accelerator-driven systems (ADS) are being investigated and designed for transmutation of the long-lived nuclear waste. Application of ADS allows to safely transmute large fractions of minor actinides (MA) per reactor core, while the fraction in critical reactors is limited to a few percent due to the safety constraints. LÄS MER

  3. 3. Efficiency Enhancement Techniques for Free-Electron Lasers

    Detta är en avhandling från Lund University, Faculty of Science, Department of Accelerator Physics, MAX IV Laboratory

    Författare :Alan Mak; Lunds universitet.; Lund University.; [2017-05]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; free-electron laser; accelerator physics; efficiency enhancement; undulator tapering; phase jump method; synchrotron radiation; Fysicumarkivet:2017:Mak;

    Sammanfattning : The central question addressed in this thesis is how to make the free-electron laser (FEL) more efficient. In recent years, coherent diffraction imaging provides an important motivation for efficiency enhancement. This is because a more efficient FEL process enables converting a larger fraction of the electron beam's power into optical power. LÄS MER

  4. 4. Beam Diagnostics and Dynamics in Nonlinear Fields

    Detta är en avhandling från Uppsala : Acta Universitatis Upsaliensis

    Författare :Jim Ögren; Uppsala universitet.; [2017]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; Beam diagnostics; Nonlinear beam dynamics; Accelerator physics;

    Sammanfattning : Particle accelerators are indispensable tools for probing matter at the smallest scales and the improvements of such tools depend on the progress and understanding of accelerator physics. The Compact Linear Collider (CLIC) is a proposed, linear electron–­positron collider on the TeV-scale, based at CERN. LÄS MER

  5. 5. Beam-Based Error Identification and Correction Methods for Particle Accelerators

    Detta är en avhandling från Chalmers University of Technology

    Författare :Tobias Persson; Chalmers tekniska högskola.; Chalmers University of Technology.; [2014]
    Nyckelord :NATURVETENSKAP; NATURAL SCIENCES; NATURVETENSKAP; NATURAL SCIENCES; Accelerators; Accelerator Optics; CLIC; CTF3; Emittance; Feedback; LHC; Pulse Compressor; Radio Frequency; Two-beam acceleration;

    Sammanfattning : Modern particle accelerators have tight tolerances on the acceptable deviation from their desired machine parameters. The control of the parameters is of crucial importance for safe machine operation and performance. This thesis focuses on beam-based methods and algorithms to identify and correct errors in particle accelerators. LÄS MER